1190 results about "Activation energy" patented technology

A prosthetic implant for treating a diseased aortic valve is described. The prosthetic implant includes a substantially tubular body configured to be positioned in an aorta of a patient, at or near the patient's aortic valve. The body includes a lumen extending through the body from a proximal end to a distal end of the body; and an adjustable frame surrounding the lumen. The prosthetic implant further includes at least one adjustable element located in or on the body and extending at least partially around a circumference of the lumen. The at least one adjustable element includes a shape memory material and is transformable, in response to application of an activation energy, from a first configuration to a second configuration, wherein the first configuration and second configuration differ in a size of at least one dimension of the at least one adjustable element. The at least one adjustable element may engage at least one of a root of the aorta, an annulus of the aortic valve, and the patient's left ventricle, when the at least one adjustable element is in the second configuration.

An annuloplasty device for supporting a heart valve is described. The system includes a body member having a proximal end, a distal end, and a length extending therebetween. The body member is configured to be implanted within a patient's heart at or near a base of a heart valve. The body member includes a first portion, including a shape memory material and being transformable from a first configuration to a second configuration in response to an activation energy. The body member also includes a second portion coupled to the first portion. The second portion includes a magnetic material that is responsive to a magnetic field. When in position at or near the base of the heart valve and when the body member transforms from the first configuration to the second configuration, the body member reshapes a tissue of the heart so as to exert a force on the heart valve base.

The present invention describes a method and apparatus for forming a uniform silicon containing film in a single wafer reactor. According to the present invention, a silicon containing film is deposited in a resistively heated single wafer chamber utilizing a process gas having a silicon source gas and which provides an activation energy less than 0.5 eV at a temperature between 750° C.-550° C.

Implants for treatment of obesity may be placed within the stomach and / or esophagus or around the outside surface of the stomach and / or esophagus. The implants comprise at least a portion constructed of a shape memory material. The implants are thus adapted to be implanted in a deformed shape, and then to be transformed through the application of activation energy into a memorized shape. The shape and / or size transformation induces a change in shape of the stomach and / or esophagus, thus altering the normal digestive path of food entering the patient's gastrointestinal tract.

An apparatus and method for plasma enhanced monolayer (PEM) processing, wherein excited species from a non-condensable gas plasma are delivered to a substrate surface during the reaction of a chemical precursor with a previously chemisorbed monolayer on the substrate surface; the excited species lower the activation energy of the monolayer formation reaction and also modulate the film properties. In preferred embodiments a process reactor has linear injectors arranged diametrically above a substrate and reactive gases are sequentially injected onto the substrate surface while it is being rotated. The reactor can be operated in pulse precursor and pulsed plasma, constant precursor and constant plasma modes, or a combination thereof.

Methods and devices are provided for support of a body structure. The devices can be adjusted within the body of a patient in a minimally invasive or non-invasive manner, such as by applying energy percutaneously or external to the patient's body. The energy may include, for example, acoustic energy, radio frequency energy, light energy and magnetic energy. Thus, as the body structure changes size and / or shape, the size and / or shape of the annuloplasty rings can be adjusted to provide continued reinforcement. In certain embodiments, the devices comprise a shape memory material, and further include a body member and an insert member. The body member has a circumference and a slot that extends at least partially along the circumference of the body. The insert member extends at least partially along the circumference of the body. The device has a first shape in a first configuration and a second shape in a second configuration, and is configured to transform from a first configuration to a second configuration in response to a first activation energy applied thereto.

In a lens sheet, a lens portion made if activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion is disposed on at least one side of a transparent substrate such as plastic sheet, a relaxation layer is disposed between the transparent substrate and the lens portion, and the thickness of the relaxation layer is within a range of 1% to 30% of the height of the lens units. The relaxation layer is made of activation energy curing resin and formed integrally with the lens portion. The refractive index of the transparent substrate is lower than that of the lens portion. The lens units are elongated prisms each having a substantially triangular cross section.

An intraoperative adjustment device is described. In some embodiments, the device includes an elongate body including a proximal end and a distal end, the distal end configured to penetrate an outer surface of an adjustable cardiac implant implanted in a patient's heart, and the proximal end and the distal end connected by at least one energy-transfer member. In some embodiments, the distal end includes at least one electrode coupled to the energy-transfer member and configured to deliver an activation energy to the adjustable cardiac implant. In some embodiments, the proximal end is configured to attach to an energy source that provides the activation energy. In some embodiments, the proximal end is configured to be located outside the patient's body while the distal end is coupled to the adjustable cardiac implant that is implanted in the patient's heart.

A thin film field effect transistor that has on a substrate, at least a gate electrode, a gate insulating layer, an active layer, a source electrode and a drain electrode, wherein the active layer includes an amorphous oxide, a carrier concentration of the amorphous oxide decreases together with lowering of a temperature thereof from room temperature, and the amorphous oxide has an activation energy of from 0.04 eV to 0.10 eV is provided. A thin film field effect transistor having high mobility and a high ON-OFF ratio, and a high-gradation electroluminescence display using the same are provided.

The present invention is intended to provide an ethylene copolymer having excellent mechanical properties and moldability, a process for preparing the copolymer, a resin composition containing the copolymer and uses thereof. The ethylene copolymer has the following properties: the copolymer comprises 90 to 99% by mol of ethylene constituent units and 1 to 60% by mol of C3-20 alpha-olefin constituent units; the ratio (Mz / Mw) of a Z average molecular weight (Mz) to a weight-average molecular weight (Mw), each molecular weight being measured by GPC, is in the range of 10 to 30, and said ratio (Mz / Mw) and the ratio (Mw / Mn) of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn), each molecular weight being measured by GPC, satisfy the relation (Mz / Mw)>(Mw / Mn); the intrinsic viscosity is in the range of 0.5 to 9 dl / g; the ratio (n*0.01 / n*8) of a melt viscosity (eta*0.01) at a shear rate of 0.01 rad / sec, as measured at 190° C., to a melt viscosity (eta*8) at a shear rate of 8 rad / sec, as measured at 190° C., and the intrinsic viscosity (eta) satisfy the relation (eta*0.01 / eta*8)>=0.893x(eta)+1.0; and the absolute value of an activation energy (Ea) of a shift factor of melt viscoelasticity is not more than 4x104 J / mol.K.

Techniques for reducing switching fields in semiconductor devices are provided. In one aspect, a semiconductor device comprising at least a first magnetic layer and a second magnetic layer with a spacer layer therebetween is provided. The semiconductor device is configured such that a thickness of at least one of the first magnetic layer and the second magnetic layer maintains a desired activation energy of the semiconductor device in the presence of an applied offsetting magnetic field. A method of reducing a switching field of a semiconductor device having at least a first magnetic layer and a second magnetic layer with a spacer layer therebetween is also provided.

Radio-frequency identification (RFID) apparatus and methodology enable a plurality of or all of the RFID tags in a stack of items such as cartons and boxes—including items that do not have a line of sight to a reader—to be read. An RFID system includes RFID tags and a transmission line. The RFID tags are mountable to items to be read and include an RFID circuit that generates tag energy when activated by activation energy from a reader. The transmission line carries activation energy from the reader and tag energy from the tags. The transmission line is positionable in operative or coupling proximately to a plurality of the tags when the plurality of the tags are mounted to items and when the items are stacked. Accordingly, when carrying activation energy from the reader, the transmission line couples with and thereby enables activation of the plurality of the tags. Further, when the plurality of the tags are activated and generating tag energy, the transmission line couples with and carries the tag energy from the plurality of the tags. The transmission line can be configured as an elongated adhesive tape-like structure that can be adhered across a plurality of RFID tags mounted to a plurality of items. The transmission line can also be disposed on an inter-item reading device that can be positioned between adjacent rows of stacked items.

The invention discloses a composite proton exchange membrane and a preparation method thereof. The preparation method for the composite proton exchange membrane comprises the following steps of: dissolving a soluble proton exchange resin A and a water insoluble high molecular polymer B to obtain solutions for electrostatic spinning; adding the solutions for the electrostatic spinning into two injectors of an electrostatic spinning device respectively, and performing the electrostatic spinning under electrostatic high pressure to obtain chemically-heterogeneous electrostatic spinning fiber membranes; modifying the chemically-heterogeneous electrostatic spinning fiber membranes by using an electrostatic self-assembly method to obtain a modified chemically-heterogeneous electrostatic spinning fiber membrane; dissolving the water insoluble high molecular polymer B in the modified chemically-heterogeneous electrostatic spinning fiber membrane by using a solvent, and dispersing and filling the dissolved water insoluble high molecular polymer B into gaps of the chemically-heterogeneous electrostatic spinning fiber membrane; and heating and drying the solvent to obtain the composite proton exchange membrane. The composite proton exchange membrane has high chemical stability, high proton conductivity and low proton conduction activation energy. The preparation method for the composite proton exchange membrane is simple and low in preparation cost.

Methods and devices are provided for support of a body structure. The devices can be adjusted within the body of a patient in a minimally invasive or non-invasive manner such as by applying energy percutaneously or external to the patient's body. The energy may include, for example, acoustic energy, radio frequency energy, light energy and magnetic energy. Thus, as the body structure changes size and / or shape, the size and / or shape of the annuloplasty rings can be adjusted to provide continued reinforcement. In certain embodiments, the devices include an anterior portion, a posterior portion and two lateral portions corresponding to intersections of the anterior portion and the posterior portion. The devices have, a first shape in a first configuration and a second shape in a second configuration and are configured to transform from the first configuration to the second configuration in response to an activation energy applied thereto. The transformation is configured to reduce a distance between the anterior portion and the posterior portion without substantially decreasing a distance between the two lateral portions.

In a lens sheet, a lens portion (3) made of activation energy curing resin such as ultraviolet curing resin has a plurality of lens units, the lens portion (3) is disposed on at least one side of a transparent substrate (2) such as plastic sheet, a relaxation layer (1) is disposed between the transparent substrate (2) and the lens portion (3), and the thickness of the relaxation layer (1) is within a range of 1% to 30% of the height (H) of the lens units. The relaxation layer (1) is made of activation energy curing resin and formed integrally with the lens portion (3). The refractive index of the transparent substrate (2) is lower than that of the lens portion (3). The lens units are elongated prisms each having a substantially triangular cross section. The thickness of the relaxation layer is within a range of 1 mum to 10 mum, for example. The prisms have the vertical angle of 50° to 75° and are arranged with a pitch of 10 mum to 150 mum. The lens sheet having the relaxation layer (1) is obtained by providing activation energy curing composition to an area between a lens portion transferring pattern surface of a lens forming mold and one side of the transparent substrate to form a composition layer between the lens forming mold and the transparent substrate, and making the thickness of the composition layer uniform with use of a nip roll disposed so as to confront the other side of said transparent substrate while nip pressure of the nip roll is regulated by pressure regulating means. Due to the relaxation layer (1), the deformation of the surface of the lens portion caused by polymerization shrinkage of the activation energy curing composition is suppressed so as to prevent occurrence of the optical defect in the lens sheet such as spot pattern, glare, etc.

Methods and devices are provided for support of a body structure. The devices can be adjusted within the body of a patient in a minimally invasive or non-invasive manner such as by applying energy percutaneously or external to the patient's body. The energy may include, for example, acoustic energy, radio frequency energy, light energy and magnetic energy. Thus, as the body structure changes size and / or shape, the size and / or shape of the annuloplasty rings can be adjusted to provide continued reinforcement. In certain embodiments, the devices include a body member including a shape memory material, and an energy absorption enhancement material configured to absorb energy in response to an activation energy. The energy absorption enhancement material is in thermal communication with said shape memory material. The body member has a first size of a dimension in a first configuration and a second size of the dimension in a second configuration, and is configured to be implanted in the first configuration into a heart. The body member is configured to transform from the first configuration to the second configuration in response to the activation energy. The second configuration is configured to reduce a dimension of a cardiac valve annulus in the heart.

Disclosed herein is a method for making fibrous web materials which may be used in or as absorbent core materials for absorbent products. The method involves providing loose fibers, entraining the fibers in a moving airstream, treating the fibers with an energy-activatable pre-polymer composition and subjecting the fibers to activation energy to initiate cross-linking of the composition. The fibers are collected on forming surface to form a fibrous web. The fibers may be treated with the composition while entrained in the moving air or after being collected on the forming surface, or in an alternate embodiment by treating with the composition a mat of fibers from which the loose fibers are provided. The fibrous web material may comprise cellulosic fibers such as pulp, and / or synthetic fibers such as staple fibers, and / or super absorbent materials.

The present invention provides a light emitting element whose driving voltage is low, and a light emitting element having longer lifetime. Moreover, the invention provides a light emitting element with high manufacturing yield. A light emitting element has a layer containing an organic material and an inorganic material, wherein activation energy of electrical conductivity of the layer containing the organic material and the inorganic material, is 0.01 eV or more and less than 0.30 eV. Preferably, the activation energy of electrical conductivity of the layer containing the organic material and the inorganic material, is 0.01 eV or more and less than 0.26 eV. More preferably, the activation energy of the electrical conductivity of the layer containing the organic material and the inorganic material, is 0.01 eV or more and less than 0.20 eV.

A radio-frequency identification (RFID) system including an RFID tag and an RFID-enabled object. The RFID tag may include a pair of antennas and an RFID circuit. The antennas receive activation energy from a reader, and the RFID circuit modulates tag energy when activation energy is received by one of the antennas. The tag may also include a transmission line for operatively coupling the RFID circuit to the antennas. A first one of the antennas may receive activation energy which, in turn, may be radiated by a second one of the antennas. The second antenna may also receive tag energy radiated by an antenna of another RFID tag. The received tag energy may then be radiated by the first antenna. Accordingly, when a plurality of the RFID tags are positioned in sequence in operative proximity with each other, activation energy may be propagated through the sequence from one RFID tag to another in one direction, and tag energy may be propagated through the sequence from one RFID tag to anther in another direction. When a plurality of tags are mounted to a plurality of objects, the now RFID-enabled objects can be read in batch, including the innermost objects in a stack and objects that may be block by an RF obstacle. The RFID tags are oriented on the objects so that when the objects are stacked together, the RFID tags are sequentially positioned in operative proximity with each other. Therefore, energy from a reader that is received by, e.g., an uppermost tag is propagated through the sequence tag by tag in one direction. In addition, tag energy modulated by the RFID circuit of each of the tags is propagated through the sequence tag by tag in the other direction. This two-dimensional propagation enables the RFID circuit of each tag of the RFID-enabled objects in the stack to be excited and to be read by the reader.

The invention relates to a microwave curing process for ceramic material gel casting, which comprises the following steps: firstly, dissolving organic monomer and crosslinker in sequence in the solvent, adding a dispersant and obtaining pre-prepared liquid; adjusting the pH value of the pre-prepared liquid to be 7-11, adding ceramic powder to the pre-prepared liquid, stirring the mixture stronglyand mechanically for 1h and obtaining even slurry; adding an initiating agent and a catalytic agent to the slurry and mixing evenly; soon afterward, removing the gas in the slurry by vacuum; casting the slurry into a module; placing the module packed with the slurry in a microwave oven for a curing process, and obtaining a gel casting ceramic body; and drying the ceramic body, and then sintering at the temperature of 1200 DEG C-2200 DEG C for 1-6h, and finally obtaining a ceramic product. Compared with the conventional gel casting curing method, the microwave curing process has the advantagesthat the process has fast heating speed and uniform temperature field, reduces the activation energy of reaction, accelerates the reaction rate, causes the polymerization reaction to be finished rapidly and achieves the purpose of high speed and high quality moulding of materials.

Microbolometer infrared detector elements that may be formed and implemented by varying type / s of precursors used to form amorphous silicon-based microbolometer membrane material / s and / or by varying composition of the final amorphous silicon-based microbolometer membrane material / s (e.g., by adjusting alloy composition) to vary the material properties such as activation energy and carrier mobility. The amorphous silicon-based microbolometer membrane material / s materials may include varying amounts of one or more additional and optional materials, including hydrogen, fluorine, germanium, n-type dopants and p-type dopants.

A white ink composition for ink-jet recording including: a white pigment; a dispersing agent; a polymerizable compound; and a photo-polymerization initiator, wherein, when an ink-jet image is formed with the white ink composition and hardened by irradiation of an activation energy ray to have a thickness of 5 through 20 μm, the hardened ink-jet image has a whiteness with lightness index of L*>90 and a chroma indexes of −2<a*<+2 and −5<b*<+5 in CIELAB color space, and a 60° mirror surface glossiness of no less than 80.

To provide a magnetic toner which has superior low-temperature fixing performance and pressure roller anti-staining properties even in various forms of use, has been kept from image defects such as image non-uniformity even during long-time image reproduction and can achieve high-level image quality. In a magnetic toner having toner particles containing at least a binder resin and a magnetic material, the activation energy Ea (kJ / mol) that is determined from a shift factor aT120 in a master curve of the toner, prepared when 120° C. is set as reference temperature, and the activation energy Eb (kJ / mol) that is determined from a shift factor aT150 in a master curve of the toner, prepared when 150° C. is set as reference temperature, satisfy Expression (1), and the Ea is 110 kJ / mol or less:1.00≦Ea / Eb<1.20  (1).

Radio-frequency identification (RFID) apparatus and methodology enable a plurality of or all of the RFID tags in a stack of items such as cartons and boxes—including items that do not have a line of sight to a reader—to be read. An RFID system includes RFID tags and a transmission line. The RFID tags are mountable to items to be read and include an RFID circuit that generates tag energy when activated by activation energy from a reader. The transmission line carries activation energy from the reader and tag energy from the tags. The transmission line is positionable in operative or coupling proximately to a plurality of the tags when the plurality of the tags are mounted to items and when the items are stacked. Accordingly, when carrying activation energy from the reader, the transmission line couples with and thereby enables activation of the plurality of the tags. Further, when the plurality of the tags are activated and generating tag energy, the transmission line couples with and carries the tag energy from the plurality of the tags. The transmission line can be configured as an elongated adhesive tape-like structure that can be adhered across a plurality of RFID tags mounted to a plurality of items. The transmission line can also be disposed on an inter-item reading device that can be positioned between adjacent rows of stacked items.

The present invention discloses a method for adopting the limonite and the siderite to produce iron powder and a reduction roaster. The material adopts the limonite and the siderite or the specularite, the hematite, and the sulphuric acid slag, the inclined rotary reduction roaster is used, the pressure of the furnace chamber is 250 to 350 Pa, under the deoxidizing atmosphere, the inert solid is rotated and moved to 650 to 900 DEG C from the low temperature, and is cooled and magnetized, and lastly become the iron powder through the dressing by magnetic separation. The present invention is adopted to produce the iron powder, the resources is rich and the production cost is low, and through the utilization of the powder metallurgy art, the iron content of the iron powder is controlled and the activation energy of the iron powder is reduced, and the chemical reaction ability is increased, thereby the output of iron powder is high, the quality is good, the iron powder is loose and porous, the specific surface is big, the apparent density is large, the manufacture cost of pellets sinter and steel smelting can be reduced greatly, and the iron powder can use directly to produce iron oxide red as well as H and N synthetic iron catalyst, or produce ultrapure iron powder.

Embodiments of a dynamically adjustable artificial chordae tendinae implant are described. In some embodiments the implant includes a body portion, including an adjustable portion. In some embodiments, the implant includes a plurality of adjustable portions. In some embodiments the adjustable element can include a shape memory material. The adjustable portion can be configured to transform from a first conformation to a second conformation in response to an activation energy. In some embodiments, the activation energy can be one of electromagnetic energy, acoustic energy, light energy, thermal energy, electrical energy, mechanical energy, or a combination of energies. The implant couples a heart valve leaflet to a papillary muscle. Activation of the shape memory material regulates tension between the muscle and valve leaflet improving coaptation of heart valve leaflets, and reducing or eliminating regurgitation.

The present invention provides a rubber composition having adequate foamability, uses thereof, a copolymer contained in the rubber composition, a rubber composition capable of providing a cross-linked foam, which has a low specific gravity and an excellent shape-retaining property even when the usage of a nonconjugated polyene is reduced, and a cross-linked rubber and a cross-linked foam, which are produced from the rubber composition. A copolymer (A) according to the present invention is a copolymer including structural units derived from ethylene [A], an α-olefin [B], a nonconjugated polyene [C-1], in which one carbon-carbon double bond (C═C) polymerizable with a metallocene catalyst is present in one molecule, and a nonconjugated polyene [C-2], in which two bonds of C═C polymerizable with the metallocene catalyst are present in one molecule, and being synthesized with the metallocene catalyst, wherein (1) the units derived from the component [B] constitute 10 to 50 percent by mole, (2) the total of the units derived from the component [C-1] and the units derived from the component [C-2] is 1.0 to 6.0 percent by mole, (3) the molar ratio of the units derived from the component [C-1] to the units derived from the component [C-2] is 75 / 25 to 99.5 / 0.5, (4) [ML (1+4) 100° C.] is 10 to 200, and (5) 50>activation energy of fluidization (kJ / mol)>35 is satisfied.

A power supply comprises a thermoelectric generator, an initial energy management assembly, an electrostatic converter and a final energy management assembly. The thermoelectric generator is adapted to generate an electrical activation energy with sufficiently high voltage in response to a temperature gradient acting across the thermoelectric generator. The initial energy management assembly is connected to the thermoelectric generator and is adapted to receive and condition the electrical activation energy produced by the thermoelectric generator. The electrostatic converter is connected to the initial energy management assembly and is activatable by the electrical activation energy received therefrom and is configured to generate electrical energy in response to vibrational energy acting thereupon. The final energy management assembly is connected to the electrostatic converter and is adapted to condition the electrical energy produced thereby.

The invention relates to an annular discharge based transient state plasma igniter. An insulation sleeve is located in an insulation protection sleeve, and one end of the insulation sleeve is located in a cathode. An anode conduction rod is located in the insulation sleeve, and one end of the anode conduction rod is arranged in a center hole of the cathode. One end of the insulation protection sleeve is arranged in a fixing base. The anode is located in the cathode. The transient state plasma igniter is provided with a mixed gas channel. According to the invention, high-energy nanosecond pulse is used to discharge electricity to form a local high temperature area, and a large quantity of active particles are activated to ignite combustible mixed gas in an extremely short period of time. The ignition area is large, and the mixed gas can be ignited by multiple points; the ignition time is extremely short, and the ignition delay time is shorter; the ignition energy can be well coupled with the gas mixture, macromolecule hydrocarbon fuel in the ignition area is ionized as active particles with low activation energy, so that the chemical reaction of the mixed gas is faster, the reaction time is shorter, and the ignition success rate is high.